package com.app.jzgdirector.common.util;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Paint;

import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;

/**
 * Created by80002037 on 2017/4/24 15:37.
 */

public class GlideCircleTransform extends BitmapTransformation {
		public GlideCircleTransform(Context context) {
				super(context);
		}

		@Override protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
				return circleCrop(pool, toTransform);
		}

		private static Bitmap circleCrop(BitmapPool pool, Bitmap source) {
				if (source == null) return null;

				int size = Math.min(source.getWidth(), source.getHeight());
				int x = (source.getWidth() - size) / 2;
				int y = (source.getHeight() - size) / 2;

				// TODO this could be acquired from the pool too
				Bitmap squared = Bitmap.createBitmap(source, x, y, size, size);

				Bitmap result = pool.get(size, size, Bitmap.Config.ARGB_8888);
				if (result == null) {
						result = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
				}

				Canvas canvas = new Canvas(result);
				Paint paint = new Paint();
				paint.setShader(new BitmapShader(squared, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));
				paint.setAntiAlias(true);
				float r = size / 2f;
				canvas.drawCircle(r, r, r, paint);
				return result;
		}

		@Override public String getId() {
				return getClass().getName();
		}
}